# Activities

• • • ##### Subject Area

• Math: Middle Grades Math: Number Sense
• Math: Middle Grades Math: Basic Facts
• Math: PreAlgebra: Number Sense and Operations

• ##### Author 6-8

30 Minutes

• ##### Device
• TI-73 Explorer™

## Fractions

#### Activity Overview

In this activity, students use the calculator to learn about the relationship between fractions, decimals, and percents.

#### Before the Activity

• Set up the calculator as explained in the appendix file
• See the attached activity PDF file for detailed instructions for this activity
• Print the pages from the attached activity PDF file for the class
• #### During the Activity

Distribute the pages to the class.

• Enter the numerator and the denominator of the first fraction, the addition operation, and the second fraction
• Observe the steps and answer on the calculator

• Subtracting Mixed Numbers
• Enter the whole number of the mixed fraction as an unit, then the fraction, the operation of subtraction, and the second fraction

• Improper fractions:
• Use the appropriate key to convert a mixed number to an improper fraction
• Enter each fraction and add

• Fractions, Decimals, and Percents:
• Convert the fraction to a decimal using the decimal key
• Convert the decimal into a percent using the percent key
• Observe the answers and steps displayed on the screen
• #### After the Activity

Review student results:

• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary